R&S ESR Series User Manual page 788

®
R&S ESR
Example:
Usage:
Manual operation:
CALCulate<n>:MARKer<m>:FUNCtion:MDEPth[:STATe] <State>
This command turns the AM Modulation Depth measurement on and off.
To work correctly, the measurement requires an AM modulated signal.
If necessary, the command positions marker 1 on the signal with the highest level.
The level value of marker 1 is regarded as the carrier level. On activating the function,
marker 2 and marker 3 are automatically set as delta markers symmetrically to the car-
rier to the adjacent maxima of the trace.
If the position of delta marker 2 is changed, delta marker 3 is moved symmetrically with
respect to the reference marker (marker 1). If the position of delta marker 3 is changed,
fine adjustment can be performed independently of delta marker 2.
The power at the marker positions is calculated from the measured levels.
The AM modulation depth is calculated from the ratio of power values at the reference
marker and the delta markers. If the two AM sidebands differ in power, the average
value of the two power values is used for calculating the AM modulation depth.
Suffix:
<n>
<m>
Parameters:
<State>
User Manual 1175.7068.02 ─ 12
Remote Commands in Spectrum Analyzer Mode
INIT:CONT OFF
Switches to single sweep mode.
CALC:MARK:X 10MHZ
Sets the reference marker (marker 1) to the carrier signal at 10
MHz.
CALC:MARK:FUNC:MDEP ON
Switches on the modulation depth measurement.
INIT;*WAI
Starts a sweep and waits for the end.
CALC:MARK:FUNC:MDEP:RES?
Outputs the measured value.
Query only
See "AM Mod Depth" on page 224
See "AM Mod Depth" on page 336
.
Selects the measurement window.
irrelevant
ON | OFF
*RST: OFF
Remote Control
785